Linux多线程编程（二）

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Linux多线程编程（二）

#include 
#include 
#include 
#include 
#include 
#define CELL 10
#define FLORE 0

 

int i=0; 

pthread_mutex_t mutex;       
pthread_cond_t cond_pro, cond_con; 


void* pro_handler(void *arg)
{
  pthread_detach(pthread_self());  
  
  while(1)
  {
    pthread_mutex_lock(&mutex);
    while(i >=CELL)
    {
      pthread_cond_wait(&cond_pro,&mutex); 
      
      
      
      
    }
    i++;
    if(i==1)
    {
      
      pthread_cond_signal(&cond_con);  
    }
    printf("add i: %d \n", i);
    pthread_mutex_unlock(&mutex);
    sleep(rand() % 5 + 1);
  }
}


void* con_handler(void *arg)
{
  pthread_detach(pthread_self());
  while(1)
  {
    pthread_mutex_lock(&mutex);
    while(i <=FLORE)
    {
      pthread_cond_wait(&cond_cno,&mutex);
    }
    i--;
    if(i==9) 
    {
      pthread_cond_signal(&cond_pro);
    }
    printf("con i: %d \n", i);
    pthread_mutex_unlock(&mutex);
    sleep(rand() % 5 + 1);
  }
}

int main(int argc, char *argv[]) // exe +num -num
{
  srand(getpid());
  int con_cnt, pro_cnt;
  pro_cnt=atoi(argv[1]);
  con_cnt=atoi(argv[2]);
  pthread_mutex_init(&mutex,NULL);
  pthread_cond_init(&cond_pro,NULL);
  pthread_cond_init(&cond_con,NULL);
  pthread_t *arr=(pthread_t*)calloc(con_cnt + pro_cnt , sizeof(pthread_t));
  int index=0;
  while(pro_cnt > 0)
  {
    pthread_create(arr + index, NULL, pro_handler, NULL);
    index++;
    pro_cnt--;
  }
  while(con_cnt > 0)
  {
    pthread_create(arr + index, NULL, con_handler, NULL);
    index++;
    con_cnt--;
  }
  while(1);
  pthread_mutex_destroy(&mutex);
  pthread_cond_destroy(&cond_pro);
  pthread_cond_destroy(&cond_con);
  return 0;
}

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